Sedimentation rates by the 210Pb chronological method in Itanhaém river watershed, southeast Brazil

Detalhes bibliográficos
Autor(a) principal: Cigagna, Cristiano [UNESP]
Data de Publicação: 2021
Outros Autores: Bonotto, Daniel Marcos [UNESP], Camargo, Antonio F. Monteiro [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s10661-021-09593-y
http://hdl.handle.net/11449/233819
Resumo: The historical variation of sedimentation rate was investigated in five cores collected from the Itanhaém watershed main rivers, the second largest coastal watershed of the São Paulo state, Brazil, using the lead-210 radioisotope as a geochronometer. The main characteristics of the rivers’ waters and sediments were determined in order to support the geochronological analysis results and associate sediments with possible source areas. In this context, the fluvial waters’ general classification indicated the facies sulfated or chlorinated sodium in the winter and summer seasons, except for the Branco river waters in summer, which were classified as calcium or magnesium bicarbonate. A longitudinal salinity gradient was found in the downstream river courses, under greater marine influence, with the ions Cl−, Na+, SO42+, Mg2+, Ca2+, and K+ being most common in the waters. Silica is the predominant constituent in the sediment cores and is inversely related to the organic matter (OM) presence. Inverse correlations were also found between silica and other constituents. The watershed sedimentation rates were determined in the range of 0.31 up to 3.97 g/cm2/year and 0.30 up to 3.40 cm/year, highlighting the core extracted from Branco river, which showed the highest sedimentation rate. The profiles corresponding to Preto and Aguapeú rivers presented discontinuities in the sedimentation rates. The discontinuities were dated and would probably be related to the anthropic activities, which intensified in the municipality of Itanhaém around the middle of the twentieth century.
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spelling Sedimentation rates by the 210Pb chronological method in Itanhaém river watershed, southeast BrazilCoastal watershedGeochronologyLead-210Sediment coresSedimentation rateThe historical variation of sedimentation rate was investigated in five cores collected from the Itanhaém watershed main rivers, the second largest coastal watershed of the São Paulo state, Brazil, using the lead-210 radioisotope as a geochronometer. The main characteristics of the rivers’ waters and sediments were determined in order to support the geochronological analysis results and associate sediments with possible source areas. In this context, the fluvial waters’ general classification indicated the facies sulfated or chlorinated sodium in the winter and summer seasons, except for the Branco river waters in summer, which were classified as calcium or magnesium bicarbonate. A longitudinal salinity gradient was found in the downstream river courses, under greater marine influence, with the ions Cl−, Na+, SO42+, Mg2+, Ca2+, and K+ being most common in the waters. Silica is the predominant constituent in the sediment cores and is inversely related to the organic matter (OM) presence. Inverse correlations were also found between silica and other constituents. The watershed sedimentation rates were determined in the range of 0.31 up to 3.97 g/cm2/year and 0.30 up to 3.40 cm/year, highlighting the core extracted from Branco river, which showed the highest sedimentation rate. The profiles corresponding to Preto and Aguapeú rivers presented discontinuities in the sedimentation rates. The discontinuities were dated and would probably be related to the anthropic activities, which intensified in the municipality of Itanhaém around the middle of the twentieth century.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Instituto de Geociências E Ciências Exatas-IGCE Universidade Estadual Paulista-UNESP, Av. 24-A No. 1515, P.O. Box 178Instituto de Biociências-IB Universidade Estadual Paulista-UNESP, Av. 24-A No. 1515, P.O. Box 178Instituto de Geociências E Ciências Exatas-IGCE Universidade Estadual Paulista-UNESP, Av. 24-A No. 1515, P.O. Box 178Instituto de Biociências-IB Universidade Estadual Paulista-UNESP, Av. 24-A No. 1515, P.O. Box 178Universidade Estadual Paulista (UNESP)Cigagna, Cristiano [UNESP]Bonotto, Daniel Marcos [UNESP]Camargo, Antonio F. Monteiro [UNESP]2022-05-01T10:35:02Z2022-05-01T10:35:02Z2021-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s10661-021-09593-yEnvironmental Monitoring and Assessment, v. 193, n. 12, 2021.1573-29590167-6369http://hdl.handle.net/11449/23381910.1007/s10661-021-09593-y2-s2.0-85119452626Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEnvironmental Monitoring and Assessmentinfo:eu-repo/semantics/openAccess2022-05-01T10:35:02Zoai:repositorio.unesp.br:11449/233819Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:00:32.728505Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Sedimentation rates by the 210Pb chronological method in Itanhaém river watershed, southeast Brazil
title Sedimentation rates by the 210Pb chronological method in Itanhaém river watershed, southeast Brazil
spellingShingle Sedimentation rates by the 210Pb chronological method in Itanhaém river watershed, southeast Brazil
Cigagna, Cristiano [UNESP]
Coastal watershed
Geochronology
Lead-210
Sediment cores
Sedimentation rate
title_short Sedimentation rates by the 210Pb chronological method in Itanhaém river watershed, southeast Brazil
title_full Sedimentation rates by the 210Pb chronological method in Itanhaém river watershed, southeast Brazil
title_fullStr Sedimentation rates by the 210Pb chronological method in Itanhaém river watershed, southeast Brazil
title_full_unstemmed Sedimentation rates by the 210Pb chronological method in Itanhaém river watershed, southeast Brazil
title_sort Sedimentation rates by the 210Pb chronological method in Itanhaém river watershed, southeast Brazil
author Cigagna, Cristiano [UNESP]
author_facet Cigagna, Cristiano [UNESP]
Bonotto, Daniel Marcos [UNESP]
Camargo, Antonio F. Monteiro [UNESP]
author_role author
author2 Bonotto, Daniel Marcos [UNESP]
Camargo, Antonio F. Monteiro [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Cigagna, Cristiano [UNESP]
Bonotto, Daniel Marcos [UNESP]
Camargo, Antonio F. Monteiro [UNESP]
dc.subject.por.fl_str_mv Coastal watershed
Geochronology
Lead-210
Sediment cores
Sedimentation rate
topic Coastal watershed
Geochronology
Lead-210
Sediment cores
Sedimentation rate
description The historical variation of sedimentation rate was investigated in five cores collected from the Itanhaém watershed main rivers, the second largest coastal watershed of the São Paulo state, Brazil, using the lead-210 radioisotope as a geochronometer. The main characteristics of the rivers’ waters and sediments were determined in order to support the geochronological analysis results and associate sediments with possible source areas. In this context, the fluvial waters’ general classification indicated the facies sulfated or chlorinated sodium in the winter and summer seasons, except for the Branco river waters in summer, which were classified as calcium or magnesium bicarbonate. A longitudinal salinity gradient was found in the downstream river courses, under greater marine influence, with the ions Cl−, Na+, SO42+, Mg2+, Ca2+, and K+ being most common in the waters. Silica is the predominant constituent in the sediment cores and is inversely related to the organic matter (OM) presence. Inverse correlations were also found between silica and other constituents. The watershed sedimentation rates were determined in the range of 0.31 up to 3.97 g/cm2/year and 0.30 up to 3.40 cm/year, highlighting the core extracted from Branco river, which showed the highest sedimentation rate. The profiles corresponding to Preto and Aguapeú rivers presented discontinuities in the sedimentation rates. The discontinuities were dated and would probably be related to the anthropic activities, which intensified in the municipality of Itanhaém around the middle of the twentieth century.
publishDate 2021
dc.date.none.fl_str_mv 2021-12-01
2022-05-01T10:35:02Z
2022-05-01T10:35:02Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s10661-021-09593-y
Environmental Monitoring and Assessment, v. 193, n. 12, 2021.
1573-2959
0167-6369
http://hdl.handle.net/11449/233819
10.1007/s10661-021-09593-y
2-s2.0-85119452626
url http://dx.doi.org/10.1007/s10661-021-09593-y
http://hdl.handle.net/11449/233819
identifier_str_mv Environmental Monitoring and Assessment, v. 193, n. 12, 2021.
1573-2959
0167-6369
10.1007/s10661-021-09593-y
2-s2.0-85119452626
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Environmental Monitoring and Assessment
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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